A tiffany blue and white room will be elegant and classy! I really want to do that with my next place.
Most of my ADPi items are packed away at the moment, but I have a few violet items on display-- picture frames, a plate from Houston Convention. Go with some pretty and subtle touches-- go crazy with kitchen magnets though-- you can never have too many magnets on the fridge! Don't forget picture frames with photos of sisters!
And of course, if you have an office, that is a great place to display your favorite alphie, an ADPi cup to hold pens, your membership certificate, maybe a framed copy of the creed.
Also, you could make a quilt of your t-shirts and use it as a throw for your sofa. I've been meaning to do this for years.